[R] tcltk: help with tkmenubutton

[Alberto Monteiro]

I am struck here. What magic inchantation is required with tkmenubutton?

I am converting the examples of Perl/Tk from page...
http://gd.tuwien.ac.at/languages/perl/Hajji-Perlkurs/part4/tkperl.html
... to R's tcltk.

But I don't know how to convert one line in this example:

library(tcltk) 

# create a main window 
mw <- tktoplevel()

# a menu consists of a horizontal menubar, 
# with associated submenus 

##### first create the horizontal menubar 
mb <- tkframe(mw, relief = 'raised', bd = 2)

# now put in the menubar some menubuttons 
m_file <- tkmenubutton(mb, text = "File", underline = 0)

# pack everything from the menubar 
tkpack(mb, side = "top", fill = "x")
tkpack(m_file, side = "left")

#### now create the submenus 
# the file menus 
#
#  HERE!!! What is the magic inchantation that I must use here?
#
# $m_file->command(-label => "New", -command => [\&file, "new"]);
#
#

Alberto Monteiro